1. What is Ohm's Law?

Ohm's Law is a fundamental principle in electrical engineering that defines the relationship between voltage, current, and resistance in an electrical circuit. It states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them.

2. How Does the Calculator Work?

The calculator uses Ohm's Law equation:

Where:

• \( I \) — Current in amperes (A)
• \( V \) — Voltage in volts (V)
• \( R \) — Resistance in ohms (Ω)

Explanation: The equation shows that current increases with higher voltage and decreases with higher resistance.

3. Importance of Current Calculation

Details: Accurate current calculation is essential for circuit design, component selection, safety analysis, and troubleshooting electrical systems.

4. Using the Calculator

Tips: Enter voltage in volts and resistance in ohms. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What are the units of measurement?
A: Voltage is measured in volts (V), resistance in ohms (Ω), and current in amperes (A).

Q2: Does Ohm's Law apply to all circuits?
A: Ohm's Law applies to resistive circuits and components that follow a linear voltage-current relationship.

Q3: What if I have multiple resistors?
A: For multiple resistors, first calculate the equivalent resistance (series or parallel) before applying Ohm's Law.

Q4: Can I calculate power with this?
A: Power can be calculated using P = V × I or P = I² × R once you have the current value.

Q5: What are typical current values in household circuits?
A: Household circuits typically carry currents from 0.5A to 20A, depending on the appliance and circuit design.